For huge building construction projects, tower cranes are used rather often. These machinery are quite required for heavy lifting as well as placing supplies and equipment. Tower cranes provide a unique configuration that offers numerous benefits over more conventional cranes. These benefits include: quiet electrical operation, higher vertical lift, reduced space requirements and increased capacities.
Hammerhead Crane
A hammerhead crane is a different design which is most often associated with a tower crane. In this situation, a long horizontal jib is connected to a vertical tower. One end of the jib extends horizontally over the worksite and the other end of the jib acts as a counterweight. There is a trolley on the hammerhead crane. This trolley has the lifting cable and can travel along the length of the jib. The tower crane is capable of operating anywhere within the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are often assembled on location with the assistance of another crane. This really saves time in equipment expenses and provides a huge benefit in setup time as well. Self-erecting cranes are usually remote-controlled from the ground, even though there are several models which have an operator cab built onto the jib.
Self-erecting cranes are usually freestanding and this allows them the opportunity to be able to be moved around. There are some models which have a telescoping tower which enables the crane to work at various heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
Usually, within urban work settings, there is not enough clearance or space for the jib to rotate freely without being blocked by existing buildings. A luffing jib tower crane is great for such tight spaces. Nearly all tower cranes have a fixed horizontal jib. The driver is able to raise or lower a luffing jib in order to enable the crane to swing in a reduced radius.